//deff("[y]=f(x)","y=4*cos(x)")
//deff('[y2]=g(x)","y2=%e^x")
//x=[0:0.1 :10]*%pi/10;
//fplot2d(x,f)
//fplot2d(x,g)


x = 0 : 0.1 : 10; 
y = sin(x);
z = sin(2*x);
plot(x, y);
plot(x, z, '+');